Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9ROB callsign genealogy
Currently held by HECKMAN, CLARENCE V
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by N9ROB's current licensee, walking backwards.
- Martin, Robert PILgranted 2022-04-11cancelled 2024-03-15
Successor callsigns
Callsigns held now by people who previously held N9ROB.
- SIMS, ROBERT LMSgranted 2019-08-07
All historical holders
Every license row we've seen with the callsign N9ROB, oldest first.
- HECKMAN, CLARENCE V WI1995-03-27 → cancelled 2004-12-23
- SIMS, ROBERT L MS2006-06-02 → cancelled 2008-10-24
- COALITION OF THE ELITE IL2012-02-04 → cancelled 2024-02-06
- Martin, Robert P IL2024-03-15 active